Treasure Hunter

You have traveled the world, searching for, and have found, rare treasures and lost civilizations all across the world. As such, you have gone on many an adventure, either on your own or in a group, to find such wonders. Many people have relied on your talents in order to wade through treacherous swamps, climb frozen mountains, or find a path through maze-like jungles and forests. as such, you have also seen your fair share of triumph, from the riches you found in a long lost tomb, remnant of a people long thought wiped from existence...and defeat, seeing multiple people fall into pit traps only to have then get impaled on spikes below, plunge into seemingly bottomless caverns, burned alive, or turned into pin cushions from dart traps, or finding out that the ancient treasure you had spent years finding was already plundered. In any situation, you have survived, either by your own cunning and wit, or a serious amount of luck.

Researcher

Starting when you choose this archetype at level 3, your keen senses and mind have always been your greatest tools. You gain proficiency in the History and Investigation skills. You also gain a +2 to your Passive Investigation. 

Just in the nick of time

Starting at 7th level, you gain a pool of d8's called Escape die.  The amount if Escape die you have in your pool is equal to 1+ your DEX modifier (min 1). Whenever you are forced to make a Dexterity Saving Throw,  you can use your reaction to roll 1 Escape die and add it to your roll. These die reset on a long rest.

Magic Runoff

As you find and gather magical items and relics, you found they are starting to leech their magic into you, if ever so slightly. You found a way to harness that magic to your advantage, instead of it ending up as a weird curse or something more sinister.

When ever you use a magic item that does not have charges, as a reaction, you can gain a  +1 bonus to your Armor class for 1 until the start or your next turn. Attacking with a magic weapon counts as using it for the context of this ability.  If you use a magic item that has charges, as a reaction, you can gain a bonus to your Armor Class equal to two times the amount of charges you used, for until the start of your next turn. (ex. if you use 2 charges, you gain +4 AC)

You may only use this ability a number of time equal to your Wisdom modifier (min. 1) and these uses rest on a long rest.

Treasure Hunter Extraordinaire

Being a treasure hunter is all you've known. there is nothing else like the thrill of finding something lost to time. With your trusty weapon at your side, your mind sharp as ever, and the promise of ever more riches than you currently possess, you find now what it means to be a extraordinary treasure seeker.

You gain a +3 bonus to your passive investigation, proficiency in Perception if you don't already have it, as well as expertise in History, Religion, and Arcana. Also, When you make a Dexterity saving throw, on a roll of 7 or lower on a d20, you can make the roll an 8.